What Charlieman said. Additionally, search on brinnoven and turbo601 for a site full of old info. I'd post a link but I'm tapping this out on a rooted Kindle and am too lame to figure out how to copy/paste links.
A note about clock chipping... I wrote an article about converting the 66 version to 100 (really 96 or lower) but in my tests the card was not very receptive to traditional -- change the input clock -- clock chipping. The conversion requires a (discontinued) ICS 9178 clock buffer chip. Something modern with the same functionality could probably be found but unless you want to kill a 100+ MHz PM8100 I know of no source for the chip.
A note about clock chipping... I wrote an article about converting the 66 version to 100 (really 96 or lower) but in my tests the card was not very receptive to traditional -- change the input clock -- clock chipping. The conversion requires a (discontinued) ICS 9178 clock buffer chip. Something modern with the same functionality could probably be found but unless you want to kill a 100+ MHz PM8100 I know of no source for the chip.